212627757640 has 32 divisors (see below), whose sum is σ = 478517074560. Its totient is φ = 85032504000.

The previous prime is 212627757631. The next prime is 212627757649. The reversal of 212627757640 is 46757726212.

It is an interprime number because it is at equal distance from previous prime (212627757631) and next prime (212627757649).

It is not an unprimeable number, because it can be changed into a prime (212627757649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395286 + ... + 762565.

It is an arithmetic number, because the mean of its divisors is an integer number (14953658580).

Almost surely, 2^212627757640 is an apocalyptic number.

212627757640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212627757640 is an abundant number, since it is smaller than the sum of its proper divisors (265889316920).

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

212627757640 is a wasteful number, since it uses less digits than its factorization.

212627757640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162453 (or 1162449 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 212627757640 in words is "two hundred twelve billion, six hundred twenty-seven million, seven hundred fifty-seven thousand, six hundred forty".