152640440479 has 4 divisors (see below), whose sum is σ = 152662132480. Its totient is φ = 152618748480.

The previous prime is 152640440461. The next prime is 152640440573. The reversal of 152640440479 is 974044046251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 152640440479 - 2¹⁷ = 152640309407 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 (152640440419) 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, 10835442 + ... + 10849519.

It is an arithmetic number, because the mean of its divisors is an integer number (38165533120).

Almost surely, 2^152640440479 is an apocalyptic number.

152640440479 is a deficient number, since it is larger than the sum of its proper divisors (21692001).

152640440479 is an equidigital number, since it uses as much as digits as its factorization.

152640440479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21692000.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 152640440479 in words is "one hundred fifty-two billion, six hundred forty million, four hundred forty thousand, four hundred seventy-nine".