70221556265724 has 240 divisors, whose sum is σ = 193494076243776. Its totient is φ = 22162871808000.

The previous prime is 70221556265723. The next prime is 70221556265741. The reversal of 70221556265724 is 42756265512207.

70221556265724 is a `hidden beast` number, since 7 + 0 + 2 + 2 + 1 + 5 + 5 + 62 + 6 + 572 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70221556265723) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4953195724 + ... + 4953209900.

Almost surely, 2^{70221556265724} 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 70221556265724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96747038121888).

70221556265724 is an abundant number, since it is smaller than the sum of its proper divisors (123272519978052).

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

70221556265724 is a wasteful number, since it uses less digits than its factorization.

70221556265724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20898 (or 20887 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 54.

The spelling of 70221556265724 in words is "seventy trillion, two hundred twenty-one billion, five hundred fifty-six million, two hundred sixty-five thousand, seven hundred twenty-four".