70012066021557 has 16 divisors (see below), whose sum is σ = 101866049832960. Its totient is φ = 42418922898800.

The previous prime is 70012066021529. The next prime is 70012066021603. The reversal of 70012066021557 is 75512066021007.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 70012066021557 - 2⁶ = 70012066021493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70012066061557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315694119 + ... + 315915812.

It is an arithmetic number, because the mean of its divisors is an integer number (6366628114560).

Almost surely, 2^{70012066021557} is an apocalyptic number.

It is an amenable number.

70012066021557 is a deficient number, since it is larger than the sum of its proper divisors (31853983811403).

70012066021557 is a wasteful number, since it uses less digits than its factorization.

70012066021557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631613304.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 70012066021557 in words is "seventy trillion, twelve billion, sixty-six million, twenty-one thousand, five hundred fifty-seven".