61651300620 has 96 divisors (see below), whose sum is σ = 212459885568. Its totient is φ = 13007745792.

The previous prime is 61651300597. The next prime is 61651300621. The reversal of 61651300620 is 2600315616.

It is a super-2 number, since 2×61651300620² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (61651300621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5640264 + ... + 5651183.

It is an arithmetic number, because the mean of its divisors is an integer number (2213123808).

Almost surely, 2^61651300620 is an apocalyptic number.

61651300620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61651300620 is an abundant number, since it is smaller than the sum of its proper divisors (150808584948).

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

61651300620 is a wasteful number, since it uses less digits than its factorization.

61651300620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11291479 (or 11291477 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 61651300620 in words is "sixty-one billion, six hundred fifty-one million, three hundred thousand, six hundred twenty".