10621491980 has 48 divisors (see below), whose sum is σ = 24926378400. Its totient is φ = 3768153600.

The previous prime is 10621491973. The next prime is 10621492019. The reversal of 10621491980 is 8919412601.

It is a super-2 number, since 2×10621491980² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 579755 + ... + 597794.

It is an arithmetic number, because the mean of its divisors is an integer number (519299550).

Almost surely, 2^10621491980 is an apocalyptic number.

10621491980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10621491980 is an abundant number, since it is smaller than the sum of its proper divisors (14304886420).

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

10621491980 is a wasteful number, since it uses less digits than its factorization.

10621491980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177610 (or 1177608 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 10621491980 in words is "ten billion, six hundred twenty-one million, four hundred ninety-one thousand, nine hundred eighty".