215145701402 has 8 divisors (see below), whose sum is σ = 324774084756. Its totient is φ = 106887673152.

The previous prime is 215145701389. The next prime is 215145701423. The reversal of 215145701402 is 204107541512.

It can be written as a sum of positive squares in 2 ways, for example, as 196524642721 + 18621058681 = 443311^2 + 136459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342588383 + ... + 342589010.

Almost surely, 2^215145701402 is an apocalyptic number.

215145701402 is a deficient number, since it is larger than the sum of its proper divisors (109628383354).

215145701402 is a wasteful number, since it uses less digits than its factorization.

215145701402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685177552.

The product of its (nonzero) digits is 11200, while the sum is 32.

The spelling of 215145701402 in words is "two hundred fifteen billion, one hundred forty-five million, seven hundred one thousand, four hundred two".