641502157479 has 8 divisors (see below), whose sum is σ = 884830562160. Its totient is φ = 412920928896.

The previous prime is 641502157469. The next prime is 641502157481. The reversal of 641502157479 is 974751205146.

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

It is not a de Polignac number, because 641502157479 - 2⁴ = 641502157463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641502157469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3686793922 + ... + 3686794095.

It is an arithmetic number, because the mean of its divisors is an integer number (110603820270).

Almost surely, 2^641502157479 is an apocalyptic number.

641502157479 is a deficient number, since it is larger than the sum of its proper divisors (243328404681).

641502157479 is a wasteful number, since it uses less digits than its factorization.

641502157479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373588049.

The product of its (nonzero) digits is 2116800, while the sum is 51.

The spelling of 641502157479 in words is "six hundred forty-one billion, five hundred two million, one hundred fifty-seven thousand, four hundred seventy-nine".