670778525354 has 16 divisors (see below), whose sum is σ = 1154180793600. Its totient is φ = 286407823344.

The previous prime is 670778525297. The next prime is 670778525371. The reversal of 670778525354 is 453525877076.

It is a junction number, because it is equal to n+sod(n) for n = 670778525293 and 670778525302.

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, 89053394 + ... + 89060925.

It is an arithmetic number, because the mean of its divisors is an integer number (72136299600).

Almost surely, 2^670778525354 is an apocalyptic number.

670778525354 is a deficient number, since it is larger than the sum of its proper divisors (483402268246).

670778525354 is a wasteful number, since it uses less digits than its factorization.

670778525354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178114597.

The product of its (nonzero) digits is 49392000, while the sum is 59.

The spelling of 670778525354 in words is "six hundred seventy billion, seven hundred seventy-eight million, five hundred twenty-five thousand, three hundred fifty-four".