73651047551 has 4 divisors (see below), whose sum is σ = 73718432952. Its totient is φ = 73583662152.

The previous prime is 73651047527. The next prime is 73651047553. The reversal of 73651047551 is 15574015637.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73651047551 - 2¹⁰ = 73651046527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73651047553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33691061 + ... + 33693246.

It is an arithmetic number, because the mean of its divisors is an integer number (18429608238).

Almost surely, 2^73651047551 is an apocalyptic number.

73651047551 is a deficient number, since it is larger than the sum of its proper divisors (67385401).

73651047551 is a wasteful number, since it uses less digits than its factorization.

73651047551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67385400.

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 73651047551 in words is "seventy-three billion, six hundred fifty-one million, forty-seven thousand, five hundred fifty-one".