15050621664 has 240 divisors, whose sum is σ = 48057343488. Its totient is φ = 4593189888.

The previous prime is 15050621633. The next prime is 15050621699. The reversal of 15050621664 is 46612605051.

It is a super-2 number, since 2×15050621664² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4277634 + ... + 4281150.

Almost surely, 2^15050621664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15050621664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24028671744).

15050621664 is an abundant number, since it is smaller than the sum of its proper divisors (33006721824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15050621664 is a wasteful number, since it uses less digits than its factorization.

15050621664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3662 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 15050621664 in words is "fifteen billion, fifty million, six hundred twenty-one thousand, six hundred sixty-four".