64155507147200 has 672 divisors, whose sum is σ = 197737519988736. Its totient is φ = 19983877079040.

The previous prime is 64155507147197. The next prime is 64155507147223. The reversal of 64155507147200 is 274170555146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 894653747 + ... + 894725453.

It is an arithmetic number, because the mean of its divisors is an integer number (294252261888).

Almost surely, 2^{64155507147200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64155507147200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98868759994368).

64155507147200 is an abundant number, since it is smaller than the sum of its proper divisors (133582012841536).

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

64155507147200 is a wasteful number, since it uses less digits than its factorization.

64155507147200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71917 (or 71902 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 64155507147200 in words is "sixty-four trillion, one hundred fifty-five billion, five hundred seven million, one hundred forty-seven thousand, two hundred".