46778544540 has 1152 divisors, whose sum is σ = 195490713600. Its totient is φ = 8778792960.

The previous prime is 46778544499. The next prime is 46778544557. The reversal of 46778544540 is 4544587764.

46778544540 is a `hidden beast` number, since 46 + 7 + 7 + 8 + 54 + 4 + 540 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 640801944 + ... + 640802016.

It is an arithmetic number, because the mean of its divisors is an integer number (169696800).

Almost surely, 2^46778544540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 46778544540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97745356800).

46778544540 is an abundant number, since it is smaller than the sum of its proper divisors (148712169060).

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

46778544540 is a wasteful number, since it uses less digits than its factorization.

46778544540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 15052800, while the sum is 54.

The spelling of 46778544540 in words is "forty-six billion, seven hundred seventy-eight million, five hundred forty-four thousand, five hundred forty".