11621783045 has 16 divisors (see below), whose sum is σ = 14555503872. Its totient is φ = 8891351040.

The previous prime is 11621783009. The next prime is 11621783051. The reversal of 11621783045 is 54038712611.

It is not a de Polignac number, because 11621783045 - 2¹⁰ = 11621782021 is a prime.

It is a super-2 number, since 2×11621783045² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 866309 + ... + 879621.

It is an arithmetic number, because the mean of its divisors is an integer number (909718992).

Almost surely, 2^11621783045 is an apocalyptic number.

It is an amenable number.

11621783045 is a deficient number, since it is larger than the sum of its proper divisors (2933720827).

11621783045 is a wasteful number, since it uses less digits than its factorization.

11621783045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20932.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 11621783045 in words is "eleven billion, six hundred twenty-one million, seven hundred eighty-three thousand, forty-five".