64913139083562 has 768 divisors, whose sum is σ = 180856281600000. Its totient is φ = 15041894400000.

The previous prime is 64913139083549. The next prime is 64913139083563. The reversal of 64913139083562 is 26538093131946.

It is a junction number, because it is equal to n+sod(n) for n = 64913139083496 and 64913139083505.

It is not an unprimeable number, because it can be changed into a prime (64913139083563) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 51972088314 + ... + 51972089562.

It is an arithmetic number, because the mean of its divisors is an integer number (235489950000).

Almost surely, 2^{64913139083562} is an apocalyptic number.

64913139083562 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 64913139083562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90428140800000).

64913139083562 is an abundant number, since it is smaller than the sum of its proper divisors (115943142516438).

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

64913139083562 is a wasteful number, since it uses less digits than its factorization.

64913139083562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515 (or 1484 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 60.

The spelling of 64913139083562 in words is "sixty-four trillion, nine hundred thirteen billion, one hundred thirty-nine million, eighty-three thousand, five hundred sixty-two".