73405001552 has 20 divisors (see below), whose sum is σ = 142244774100. Its totient is φ = 36696672768.

The previous prime is 73405001519. The next prime is 73405001563. The reversal of 73405001552 is 25510050437.

It can be written as a sum of positive squares in 2 ways, for example, as 41462733376 + 31942268176 = 203624^2 + 178724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259427 + ... + 462722.

It is an arithmetic number, because the mean of its divisors is an integer number (7112238705).

Almost surely, 2^73405001552 is an apocalyptic number.

It is an amenable number.

73405001552 is a deficient number, since it is larger than the sum of its proper divisors (68839772548).

73405001552 is a wasteful number, since it uses less digits than its factorization.

73405001552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728510 (or 728504 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

Adding to 73405001552 its reverse (25510050437), we get a palindrome (98915051989).

The spelling of 73405001552 in words is "seventy-three billion, four hundred five million, one thousand, five hundred fifty-two".