137878058087778 has 8 divisors (see below), whose sum is σ = 275756116175568. Its totient is φ = 45959352695924.

The previous prime is 137878058087717. The next prime is 137878058087807. The reversal of 137878058087778 is 877780850878731.

It is a sphenic number, since it is the product of 3 distinct primes.

137878058087778 is an admirable number.

It is a super-3 number, since 3×137878058087778³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 137878058087778.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11489838173976 + ... + 11489838173987.

It is an arithmetic number, because the mean of its divisors is an integer number (34469514521946).

Almost surely, 2^{137878058087778} is an apocalyptic number.

137878058087778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

137878058087778 is a wasteful number, since it uses less digits than its factorization.

137878058087778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22979676347968.

The product of its (nonzero) digits is 8260976640, while the sum is 84.

The spelling of 137878058087778 in words is "one hundred thirty-seven trillion, eight hundred seventy-eight billion, fifty-eight million, eighty-seven thousand, seven hundred seventy-eight".