40878765821554 has 8 divisors (see below), whose sum is σ = 61724229187968. Its totient is φ = 20304022758900.

The previous prime is 40878765821549. The next prime is 40878765821639. The reversal of 40878765821554 is 45512856787804.

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

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, 67680075562 + ... + 67680076165.

It is an arithmetic number, because the mean of its divisors is an integer number (7715528648496).

Almost surely, 2^{40878765821554} is an apocalyptic number.

40878765821554 is a deficient number, since it is larger than the sum of its proper divisors (20845463366414).

40878765821554 is a wasteful number, since it uses less digits than its factorization.

40878765821554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135360151880.

The product of its (nonzero) digits is 602112000, while the sum is 70.

The spelling of 40878765821554 in words is "forty trillion, eight hundred seventy-eight billion, seven hundred sixty-five million, eight hundred twenty-one thousand, five hundred fifty-four".