15540011630 has 64 divisors (see below), whose sum is σ = 33995505600. Its totient is φ = 5036344320.

The previous prime is 15540011621. The next prime is 15540011639. The reversal of 15540011630 is 3611004551.

15540011630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15540011621) and next prime (15540011639).

It is a super-2 number, since 2×15540011630² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 15540011630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15540011639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145895 + ... + 228834.

It is an arithmetic number, because the mean of its divisors is an integer number (531179775).

Almost surely, 2^15540011630 is an apocalyptic number.

15540011630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15540011630 is an abundant number, since it is smaller than the sum of its proper divisors (18455493970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15540011630 is a wasteful number, since it uses less digits than its factorization.

15540011630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374789.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 15540011630 in words is "fifteen billion, five hundred forty million, eleven thousand, six hundred thirty".