40130020551 has 4 divisors (see below), whose sum is σ = 53506694072. Its totient is φ = 26753347032.

The previous prime is 40130020499. The next prime is 40130020591. The reversal of 40130020551 is 15502003104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40130020551 - 2⁶ = 40130020487 is a prime.

It is a super-2 number, since 2×40130020551² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40130020591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6688336756 + ... + 6688336761.

It is an arithmetic number, because the mean of its divisors is an integer number (13376673518).

Almost surely, 2^40130020551 is an apocalyptic number.

40130020551 is a deficient number, since it is larger than the sum of its proper divisors (13376673521).

40130020551 is a wasteful number, since it uses less digits than its factorization.

40130020551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376673520.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 40130020551 its reverse (15502003104), we get a palindrome (55632023655).

The spelling of 40130020551 in words is "forty billion, one hundred thirty million, twenty thousand, five hundred fifty-one".