73477444040 has 384 divisors, whose sum is σ = 232111353600. Its totient is φ = 20215388160.

The previous prime is 73477444039. The next prime is 73477444049. The reversal of 73477444040 is 4044477437.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 73477443982 and 73477444000.

It is not an unprimeable number, because it can be changed into a prime (73477444049) 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, 21179426 + ... + 21182894.

It is an arithmetic number, because the mean of its divisors is an integer number (604456650).

Almost surely, 2^73477444040 is an apocalyptic number.

73477444040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73477444040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116055676800).

73477444040 is an abundant number, since it is smaller than the sum of its proper divisors (158633909560).

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

73477444040 is a wasteful number, since it uses less digits than its factorization.

73477444040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3557 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 44.

The spelling of 73477444040 in words is "seventy-three billion, four hundred seventy-seven million, four hundred forty-four thousand, forty".