212736693870 has 32 divisors (see below), whose sum is σ = 567297851040. Its totient is φ = 56729784960.

The previous prime is 212736693863. The next prime is 212736693887. The reversal of 212736693870 is 78396637212.

212736693870 is a `hidden beast` number, since 2 + 127 + 366 + 93 + 8 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 393956571 + ... + 393957110.

It is an arithmetic number, because the mean of its divisors is an integer number (17728057845).

Almost surely, 2^212736693870 is an apocalyptic number.

212736693870 is an abundant number, since it is smaller than the sum of its proper divisors (354561157170).

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

212736693870 is a wasteful number, since it uses less digits than its factorization.

212736693870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787913697 (or 787913691 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 212736693870 in words is "two hundred twelve billion, seven hundred thirty-six million, six hundred ninety-three thousand, eight hundred seventy".