11601620331 has 16 divisors (see below), whose sum is σ = 17680214784. Its totient is φ = 6628914144.

The previous prime is 11601620273. The next prime is 11601620339. The reversal of 11601620331 is 13302610611.

It is not a de Polignac number, because 11601620331 - 2¹¹ = 11601618283 is a prime.

It is a super-2 number, since 2×11601620331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11601620339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365560 + ... + 396026.

It is an arithmetic number, because the mean of its divisors is an integer number (1105013424).

Almost surely, 2^11601620331 is an apocalyptic number.

11601620331 is a deficient number, since it is larger than the sum of its proper divisors (6078594453).

11601620331 is a wasteful number, since it uses less digits than its factorization.

11601620331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48610.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 11601620331 in words is "eleven billion, six hundred one million, six hundred twenty thousand, three hundred thirty-one".