947137387680 has 576 divisors, whose sum is σ = 3688660684800. Its totient is φ = 219191132160.

The previous prime is 947137387639. The next prime is 947137387723. The reversal of 947137387680 is 86783731749.

947137387680 is a `hidden beast` number, since 9 + 47 + 137 + 387 + 6 + 80 = 666.

It is a super-2 number, since 2×947137387680² (a number of 25 digits) contains 22 as substring.

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, 40871457 + ... + 40894623.

It is an arithmetic number, because the mean of its divisors is an integer number (6403924800).

Almost surely, 2^947137387680 is an apocalyptic number.

947137387680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 947137387680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844330342400).

947137387680 is an abundant number, since it is smaller than the sum of its proper divisors (2741523297120).

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

947137387680 is a wasteful number, since it uses less digits than its factorization.

947137387680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23317 (or 23306 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 947137387680 in words is "nine hundred forty-seven billion, one hundred thirty-seven million, three hundred eighty-seven thousand, six hundred eighty".