70911918360640 has 672 divisors, whose sum is σ = 214635956198400. Its totient is φ = 22188561776640.

The previous prime is 70911918360629. The next prime is 70911918360643. The reversal of 70911918360640 is 4606381911907.

It is not an unprimeable number, because it can be changed into a prime (70911918360643) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 606083266 + ... + 606200254.

Almost surely, 2^{70911918360640} is an apocalyptic number.

70911918360640 is a gapful number since it is divisible by the number (70) 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 70911918360640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107317978099200).

70911918360640 is an abundant number, since it is smaller than the sum of its proper divisors (143724037837760).

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

70911918360640 is a wasteful number, since it uses less digits than its factorization.

70911918360640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117123 (or 117106 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 70911918360640 in words is "seventy trillion, nine hundred eleven billion, nine hundred eighteen million, three hundred sixty thousand, six hundred forty".