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64371477934 = 2126719253993
BaseRepresentation
bin111011111100110101…
…101100110110101110
320011011011021220010101
4323330311230312232
52023313044243214
645323304101314
74436120351221
oct737465546656
9204134256111
1064371477934
1125333026145
1210585a6483a
1360bb314b1a
1431892a55b8
151a1b405774
hexefcd6cdae

64371477934 has 8 divisors (see below), whose sum is σ = 96558359040. Its totient is φ = 32185358256.

The previous prime is 64371477889. The next prime is 64371477943. The reversal of 64371477934 is 43977417346.

It is a happy number.

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

It is a congruent number.

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, 126442 + ... + 380434.

It is an arithmetic number, because the mean of its divisors is an integer number (12069794880).

Almost surely, 264371477934 is an apocalyptic number.

64371477934 is a deficient number, since it is larger than the sum of its proper divisors (32186881106).

64371477934 is a wasteful number, since it uses less digits than its factorization.

64371477934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380714.

The product of its digits is 10668672, while the sum is 55.

The spelling of 64371477934 in words is "sixty-four billion, three hundred seventy-one million, four hundred seventy-seven thousand, nine hundred thirty-four".

Divisors: 1 2 126719 253438 253993 507986 32185738967 64371477934