7621677131045 has 8 divisors (see below), whose sum is σ = 9684013296024. Its totient is φ = 5738674545664.

The previous prime is 7621677131023. The next prime is 7621677131063. The reversal of 7621677131045 is 5401317761267.

It can be written as a sum of positive squares in 4 ways, for example, as 325120057249 + 7296557073796 = 570193^2 + 2701214^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7621677131045 - 2⁶ = 7621677130981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7621677130984 and 7621677131002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44833394804 + ... + 44833394973.

It is an arithmetic number, because the mean of its divisors is an integer number (1210501662003).

Almost surely, 2^{7621677131045} is an apocalyptic number.

It is an amenable number.

7621677131045 is a deficient number, since it is larger than the sum of its proper divisors (2062336164979).

7621677131045 is a wasteful number, since it uses less digits than its factorization.

7621677131045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89666789799.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The spelling of 7621677131045 in words is "seven trillion, six hundred twenty-one billion, six hundred seventy-seven million, one hundred thirty-one thousand, forty-five".