11461551657 has 32 divisors (see below), whose sum is σ = 16333114752. Its totient is φ = 7124189184.

The previous prime is 11461551653. The next prime is 11461551677. The reversal of 11461551657 is 75615516411.

It is not a de Polignac number, because 11461551657 - 2² = 11461551653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11461551653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4030078 + ... + 4032920.

It is an arithmetic number, because the mean of its divisors is an integer number (510409836).

Almost surely, 2^11461551657 is an apocalyptic number.

11461551657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11461551657 is a deficient number, since it is larger than the sum of its proper divisors (4871563095).

11461551657 is a wasteful number, since it uses less digits than its factorization.

11461551657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577.

The product of its digits is 126000, while the sum is 42.

The spelling of 11461551657 in words is "eleven billion, four hundred sixty-one million, five hundred fifty-one thousand, six hundred fifty-seven".