121377440788 has 24 divisors (see below), whose sum is σ = 214508437920. Its totient is φ = 60092085600.

The previous prime is 121377440693. The next prime is 121377440791. The reversal of 121377440788 is 887044773121.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 170638 + ... + 521413.

It is an arithmetic number, because the mean of its divisors is an integer number (8937851580).

Almost surely, 2^121377440788 is an apocalyptic number.

It is an amenable number.

121377440788 is a deficient number, since it is larger than the sum of its proper divisors (93130997132).

121377440788 is a wasteful number, since it uses less digits than its factorization.

121377440788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692487 (or 692485 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 121377440788 in words is "one hundred twenty-one billion, three hundred seventy-seven million, four hundred forty thousand, seven hundred eighty-eight".