10151661556 has 12 divisors (see below), whose sum is σ = 17766669060. Its totient is φ = 5075470400.

The previous prime is 10151661551. The next prime is 10151661581. The reversal of 10151661556 is 65516615101.

It can be written as a sum of positive squares in 2 ways, for example, as 8116208100 + 2035453456 = 90090^2 + 45116^2 .

It is a super-2 number, since 2×10151661556² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10151661551) 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, 20791 + ... + 143998.

It is an arithmetic number, because the mean of its divisors is an integer number (1480555755).

Almost surely, 2^10151661556 is an apocalyptic number.

It is an amenable number.

10151661556 is a deficient number, since it is larger than the sum of its proper divisors (7615007504).

10151661556 is a wasteful number, since it uses less digits than its factorization.

10151661556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180194 (or 180192 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 10151661556 in words is "ten billion, one hundred fifty-one million, six hundred sixty-one thousand, five hundred fifty-six".