64893062163930 has 256 divisors, whose sum is σ = 209309016010752. Its totient is φ = 12435171840000.

The previous prime is 64893062163899. The next prime is 64893062163949. The reversal of 64893062163930 is 3936126039846.

It is a super-2 number, since 2×64893062163930² (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 127 ways as a sum of consecutive naturals, for example, 30533490 + ... + 32589570.

It is an arithmetic number, because the mean of its divisors is an integer number (817613343792).

Almost surely, 2^{64893062163930} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64893062163930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104654508005376).

64893062163930 is an abundant number, since it is smaller than the sum of its proper divisors (144415953846822).

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

64893062163930 is a wasteful number, since it uses less digits than its factorization.

64893062163930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057173.

The product of its (nonzero) digits is 30233088, while the sum is 60.

The spelling of 64893062163930 in words is "sixty-four trillion, eight hundred ninety-three billion, sixty-two million, one hundred sixty-three thousand, nine hundred thirty".