70021161504 has 384 divisors, whose sum is σ = 241190208000. Its totient is φ = 19999187712.

The previous prime is 70021161503. The next prime is 70021161541. The reversal of 70021161504 is 40516112007.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (70021161503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24003054 + ... + 24005970.

It is an arithmetic number, because the mean of its divisors is an integer number (628099500).

Almost surely, 2^70021161504 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 70021161504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120595104000).

70021161504 is an abundant number, since it is smaller than the sum of its proper divisors (171169046496).

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

70021161504 is an frugal number, since it uses more digits than its factorization.

70021161504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 70021161504 in words is "seventy billion, twenty-one million, one hundred sixty-one thousand, five hundred four".