201532439397 has 4 divisors (see below), whose sum is σ = 268709919200. Its totient is φ = 134354959596.

The previous prime is 201532439389. The next prime is 201532439411. The reversal of 201532439397 is 793934235102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201532439397 - 2³ = 201532439389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201532459397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33588739897 + ... + 33588739902.

It is an arithmetic number, because the mean of its divisors is an integer number (67177479800).

Almost surely, 2^201532439397 is an apocalyptic number.

It is an amenable number.

201532439397 is a deficient number, since it is larger than the sum of its proper divisors (67177479803).

201532439397 is an equidigital number, since it uses as much as digits as its factorization.

201532439397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67177479802.

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 201532439397 in words is "two hundred one billion, five hundred thirty-two million, four hundred thirty-nine thousand, three hundred ninety-seven".