70281497978 has 16 divisors (see below), whose sum is σ = 106024882176. Its totient is φ = 34940046960.

The previous prime is 70281497959. The next prime is 70281498011. The reversal of 70281497978 is 87979418207.

It is a self number, because there is not a number n which added to its sum of digits gives 70281497978.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775700 + ... + 861552.

It is an arithmetic number, because the mean of its divisors is an integer number (6626555136).

Almost surely, 2^70281497978 is an apocalyptic number.

70281497978 is a deficient number, since it is larger than the sum of its proper divisors (35743384198).

70281497978 is a wasteful number, since it uses less digits than its factorization.

70281497978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88189.

The product of its (nonzero) digits is 14224896, while the sum is 62.

The spelling of 70281497978 in words is "seventy billion, two hundred eighty-one million, four hundred ninety-seven thousand, nine hundred seventy-eight".