64534457074450 has 144 divisors (see below), whose sum is σ = 132574212957312. Its totient is φ = 23354164944000.

The previous prime is 64534457074427. The next prime is 64534457074489. The reversal of 64534457074450 is 5447075443546.

It is a super-2 number, since 2×64534457074450² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1487050152 + ... + 1487093548.

It is an arithmetic number, because the mean of its divisors is an integer number (920654256648).

Almost surely, 2^{64534457074450} is an apocalyptic number.

64534457074450 is an abundant number, since it is smaller than the sum of its proper divisors (68039755882862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64534457074450 is a wasteful number, since it uses less digits than its factorization.

64534457074450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44609 (or 44593 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 58.

The spelling of 64534457074450 in words is "sixty-four trillion, five hundred thirty-four billion, four hundred fifty-seven million, seventy-four thousand, four hundred fifty".