75554476980 has 288 divisors, whose sum is σ = 238466156544. Its totient is φ = 17827907328.

The previous prime is 75554476979. The next prime is 75554476981. The reversal of 75554476980 is 8967445557.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75554476979) and next prime (75554476981).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75554476981) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21419977 + ... + 21423503.

It is an arithmetic number, because the mean of its divisors is an integer number (828007488).

Almost surely, 2^75554476980 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 75554476980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119233078272).

75554476980 is an abundant number, since it is smaller than the sum of its proper divisors (162911679564).

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

75554476980 is a wasteful number, since it uses less digits than its factorization.

75554476980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 60.

The spelling of 75554476980 in words is "seventy-five billion, five hundred fifty-four million, four hundred seventy-six thousand, nine hundred eighty".