215700001700 has 36 divisors (see below), whose sum is σ = 468422019072. Its totient is φ = 86214928800.

The previous prime is 215700001667. The next prime is 215700001729. The reversal of 215700001700 is 7100007512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680036 + ... + 945435.

It is an arithmetic number, because the mean of its divisors is an integer number (13011722752).

Almost surely, 2^215700001700 is an apocalyptic number.

215700001700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215700001700 is an abundant number, since it is smaller than the sum of its proper divisors (252722017372).

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

215700001700 is a wasteful number, since it uses less digits than its factorization.

215700001700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626812 (or 1626805 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 23.

The spelling of 215700001700 in words is "two hundred fifteen billion, seven hundred million, one thousand, seven hundred".