70621678154 has 32 divisors (see below), whose sum is σ = 112706257680. Its totient is φ = 33073266688.

The previous prime is 70621678121. The next prime is 70621678157. The reversal of 70621678154 is 45187612607.

It can be written as a sum of positive squares in 8 ways, for example, as 70063443025 + 558235129 = 264695^2 + 23627^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70621678099 and 70621678108.

It is not an unprimeable number, because it can be changed into a prime (70621678157) 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, 11155262 + ... + 11161590.

Almost surely, 2^70621678154 is an apocalyptic number.

70621678154 is a deficient number, since it is larger than the sum of its proper divisors (42084579526).

70621678154 is a wasteful number, since it uses less digits than its factorization.

70621678154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 70621678154 in words is "seventy billion, six hundred twenty-one million, six hundred seventy-eight thousand, one hundred fifty-four".