70078908978 has 48 divisors (see below), whose sum is σ = 170626921920. Its totient is φ = 20625229152.

The previous prime is 70078908961. The next prime is 70078909009. The reversal of 70078908978 is 87980987007.

It is a super-2 number, since 2×70078908978² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6505108 + ... + 6515871.

It is an arithmetic number, because the mean of its divisors is an integer number (3554727540).

Almost surely, 2^70078908978 is an apocalyptic number.

70078908978 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

70078908978 is an abundant number, since it is smaller than the sum of its proper divisors (100548012942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70078908978 is a wasteful number, since it uses less digits than its factorization.

70078908978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13021023 (or 13021020 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 63.

The spelling of 70078908978 in words is "seventy billion, seventy-eight million, nine hundred eight thousand, nine hundred seventy-eight".