642051548580 has 96 divisors (see below), whose sum is σ = 1936167980544. Its totient is φ = 158032387584.

The previous prime is 642051548569. The next prime is 642051548591. The reversal of 642051548580 is 85845150246.

It is an interprime number because it is at equal distance from previous prime (642051548569) and next prime (642051548591).

It is a super-2 number, since 2×642051548580² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20261829 + ... + 20293491.

It is an arithmetic number, because the mean of its divisors is an integer number (20168416464).

Almost surely, 2^642051548580 is an apocalyptic number.

642051548580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

642051548580 is an abundant number, since it is smaller than the sum of its proper divisors (1294116431964).

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

642051548580 is a wasteful number, since it uses less digits than its factorization.

642051548580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57685 (or 57683 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 48.

The spelling of 642051548580 in words is "six hundred forty-two billion, fifty-one million, five hundred forty-eight thousand, five hundred eighty".