73474155420 has 24 divisors (see below), whose sum is σ = 205727635344. Its totient is φ = 19593108096.

The previous prime is 73474155373. The next prime is 73474155421. The reversal of 73474155420 is 2455147437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73474155421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612284569 + ... + 612284688.

It is an arithmetic number, because the mean of its divisors is an integer number (8571984806).

Almost surely, 2^73474155420 is an apocalyptic number.

It is an amenable number.

73474155420 is an abundant number, since it is smaller than the sum of its proper divisors (132253479924).

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

73474155420 is a wasteful number, since it uses less digits than its factorization.

73474155420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224569269 (or 1224569267 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 73474155420 in words is "seventy-three billion, four hundred seventy-four million, one hundred fifty-five thousand, four hundred twenty".