977955363840 has 704 divisors, whose sum is σ = 3878618655744. Its totient is φ = 204791611392.

The previous prime is 977955363823. The next prime is 977955363877. The reversal of 977955363840 is 48363559779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 191490567 + ... + 191495673.

Almost surely, 2^977955363840 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 977955363840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939309327872).

977955363840 is an abundant number, since it is smaller than the sum of its proper divisors (2900663291904).

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

977955363840 is a wasteful number, since it uses less digits than its factorization.

977955363840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5292 (or 5274 counting only the distinct ones).

The product of its (nonzero) digits is 171460800, while the sum is 66.

The spelling of 977955363840 in words is "nine hundred seventy-seven billion, nine hundred fifty-five million, three hundred sixty-three thousand, eight hundred forty".