90779087148 has 48 divisors (see below), whose sum is σ = 223727320320. Its totient is φ = 28569219264.

The previous prime is 90779087099. The next prime is 90779087149. The reversal of 90779087148 is 84178097709.

It is a junction number, because it is equal to n+sod(n) for n = 90779087091 and 90779087100.

It is not an unprimeable number, because it can be changed into a prime (90779087149) 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, 612640 + ... + 746247.

It is an arithmetic number, because the mean of its divisors is an integer number (4660985840).

Almost surely, 2^90779087148 is an apocalyptic number.

It is an amenable number.

90779087148 is an abundant number, since it is smaller than the sum of its proper divisors (132948233172).

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

90779087148 is a wasteful number, since it uses less digits than its factorization.

90779087148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359206 (or 1359204 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 60.

The spelling of 90779087148 in words is "ninety billion, seven hundred seventy-nine million, eighty-seven thousand, one hundred forty-eight".