64078269490 has 32 divisors (see below), whose sum is σ = 122147149824. Its totient is φ = 24119335680.

The previous prime is 64078269467. The next prime is 64078269503. The reversal of 64078269490 is 9496287046.

It is a happy number.

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, 1036017 + ... + 1096123.

It is an arithmetic number, because the mean of its divisors is an integer number (3817098432).

Almost surely, 2^64078269490 is an apocalyptic number.

64078269490 is a deficient number, since it is larger than the sum of its proper divisors (58068880334).

64078269490 is a wasteful number, since it uses less digits than its factorization.

64078269490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66402.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 64078269490 in words is "sixty-four billion, seventy-eight million, two hundred sixty-nine thousand, four hundred ninety".