11621504755 has 16 divisors (see below), whose sum is σ = 16776910080. Its totient is φ = 7549608672.

The previous prime is 11621504743. The next prime is 11621504761. The reversal of 11621504755 is 55740512611.

11621504755 = T₁₂₆ + T₁₂₇ + ... + T₄₁₁₅.

It is a cyclic number.

It is not a de Polignac number, because 11621504755 - 2¹¹ = 11621502707 is a prime.

It is a super-2 number, since 2×11621504755² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8737309 + ... + 8738638.

It is an arithmetic number, because the mean of its divisors is an integer number (1048556880).

Almost surely, 2^11621504755 is an apocalyptic number.

11621504755 is a deficient number, since it is larger than the sum of its proper divisors (5155405325).

11621504755 is a wasteful number, since it uses less digits than its factorization.

11621504755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17475978.

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 11621504755 in words is "eleven billion, six hundred twenty-one million, five hundred four thousand, seven hundred fifty-five".