73712072949 has 4 divisors (see below), whose sum is σ = 98282763936. Its totient is φ = 49141381964.

The previous prime is 73712072911. The next prime is 73712072957. The reversal of 73712072949 is 94927021737.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 73712072949 - 2¹² = 73712068853 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73712072909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12285345489 + ... + 12285345494.

It is an arithmetic number, because the mean of its divisors is an integer number (24570690984).

Almost surely, 2^73712072949 is an apocalyptic number.

It is an amenable number.

73712072949 is a deficient number, since it is larger than the sum of its proper divisors (24570690987).

73712072949 is a wasteful number, since it uses less digits than its factorization.

73712072949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24570690986.

The product of its (nonzero) digits is 1333584, while the sum is 51.

The spelling of 73712072949 in words is "seventy-three billion, seven hundred twelve million, seventy-two thousand, nine hundred forty-nine".