70145326557 has 12 divisors (see below), whose sum is σ = 101346945180. Its totient is φ = 46751588928.

The previous prime is 70145326519. The next prime is 70145326613. The reversal of 70145326557 is 75562354107.

It is a happy number.

70145326557 is a `hidden beast` number, since 7 + 0 + 1 + 4 + 532 + 65 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36763844121 + 33381482436 = 191739^2 + 182706^2 .

It is not a de Polignac number, because 70145326557 - 2⁷ = 70145326429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70145326507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 959632 + ... + 1030137.

It is an arithmetic number, because the mean of its divisors is an integer number (8445578765).

Almost surely, 2^70145326557 is an apocalyptic number.

It is an amenable number.

70145326557 is a deficient number, since it is larger than the sum of its proper divisors (31201618623).

70145326557 is a wasteful number, since it uses less digits than its factorization.

70145326557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993692 (or 1993689 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 70145326557 in words is "seventy billion, one hundred forty-five million, three hundred twenty-six thousand, five hundred fifty-seven".