73709213545 has 16 divisors (see below), whose sum is σ = 100687370112. Its totient is φ = 51275973760.

The previous prime is 73709213531. The next prime is 73709213561. The reversal of 73709213545 is 54531290737.

It is a de Polignac number, because none of the positive numbers 2^k-73709213545 is a prime.

It is a super-2 number, since 2×73709213545² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73709213495 and 73709213504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29132812 + ... + 29135341.

It is an arithmetic number, because the mean of its divisors is an integer number (6292960632).

Almost surely, 2^73709213545 is an apocalyptic number.

It is an amenable number.

73709213545 is a deficient number, since it is larger than the sum of its proper divisors (26978156567).

73709213545 is a wasteful number, since it uses less digits than its factorization.

73709213545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58268192.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 73709213545 in words is "seventy-three billion, seven hundred nine million, two hundred thirteen thousand, five hundred forty-five".