215070745740 has 48 divisors (see below), whose sum is σ = 603933587712. Its totient is φ = 57186913216.

The previous prime is 215070745739. The next prime is 215070745781. The reversal of 215070745740 is 47547070512.

It is a junction number, because it is equal to n+sod(n) for n = 215070745692 and 215070745701.

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, 5144184 + ... + 5185823.

It is an arithmetic number, because the mean of its divisors is an integer number (12581949744).

Almost surely, 2^215070745740 is an apocalyptic number.

215070745740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215070745740 is an abundant number, since it is smaller than the sum of its proper divisors (388862841972).

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

215070745740 is a wasteful number, since it uses less digits than its factorization.

215070745740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10330366 (or 10330364 counting only the distinct ones).

The product of its (nonzero) digits is 274400, while the sum is 42.

The spelling of 215070745740 in words is "two hundred fifteen billion, seventy million, seven hundred forty-five thousand, seven hundred forty".