73737021051 has 24 divisors (see below), whose sum is σ = 112798682880. Its totient is φ = 46318898736.

The previous prime is 73737021031. The next prime is 73737021053. The reversal of 73737021051 is 15012073737.

73737021051 is a `hidden beast` number, since 7 + 373 + 70 + 210 + 5 + 1 = 666.

It is not a de Polignac number, because 73737021051 - 2¹⁹ = 73736496763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73737020997 and 73737021015.

It is not an unprimeable number, because it can be changed into a prime (73737021053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2644471 + ... + 2672208.

It is an arithmetic number, because the mean of its divisors is an integer number (4699945120).

Almost surely, 2^73737021051 is an apocalyptic number.

73737021051 is a deficient number, since it is larger than the sum of its proper divisors (39061661829).

73737021051 is a wasteful number, since it uses less digits than its factorization.

73737021051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316775 (or 5316772 counting only the distinct ones).

The product of its (nonzero) digits is 30870, while the sum is 36.

Adding to 73737021051 its reverse (15012073737), we get a palindrome (88749094788).

The spelling of 73737021051 in words is "seventy-three billion, seven hundred thirty-seven million, twenty-one thousand, fifty-one".