70145675421 has 16 divisors (see below), whose sum is σ = 95071537344. Its totient is φ = 45997714944.

The previous prime is 70145675419. The next prime is 70145675437. The reversal of 70145675421 is 12457654107.

It is not a de Polignac number, because 70145675421 - 2¹ = 70145675419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70145675441) 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, 691986 + ... + 786851.

It is an arithmetic number, because the mean of its divisors is an integer number (5941971084).

Almost surely, 2^70145675421 is an apocalyptic number.

It is an amenable number.

70145675421 is a deficient number, since it is larger than the sum of its proper divisors (24925861923).

70145675421 is a wasteful number, since it uses less digits than its factorization.

70145675421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479100.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 70145675421 in words is "seventy billion, one hundred forty-five million, six hundred seventy-five thousand, four hundred twenty-one".