11651601051 has 12 divisors (see below), whose sum is σ = 16915524912. Its totient is φ = 7728302736.

The previous prime is 11651601043. The next prime is 11651601061. The reversal of 11651601051 is 15010615611.

11651601051 is a `hidden beast` number, since 1 + 1 + 6 + 5 + 1 + 601 + 0 + 51 = 666.

It is not a de Polignac number, because 11651601051 - 2³ = 11651601043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11651601011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3284071 + ... + 3287616.

It is an arithmetic number, because the mean of its divisors is an integer number (1409627076).

Almost surely, 2^11651601051 is an apocalyptic number.

11651601051 is a deficient number, since it is larger than the sum of its proper divisors (5263923861).

11651601051 is a wasteful number, since it uses less digits than its factorization.

11651601051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571890 (or 6571887 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 11651601051 in words is "eleven billion, six hundred fifty-one million, six hundred one thousand, fifty-one".