623643523100455 has 16 divisors (see below), whose sum is σ = 879206533267104. Its totient is φ = 418669777745280.

The previous prime is 623643523100453. The next prime is 623643523100461. The reversal of 623643523100455 is 554001325346326.

It is not a de Polignac number, because 623643523100455 - 2¹ = 623643523100453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 623643523100399 and 623643523100408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623643523100453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436114351104 + ... + 436114352533.

It is an arithmetic number, because the mean of its divisors is an integer number (54950408329194).

Almost surely, 2^{623643523100455} is an apocalyptic number.

623643523100455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

623643523100455 is a deficient number, since it is larger than the sum of its proper divisors (255563010166649).

623643523100455 is a wasteful number, since it uses less digits than its factorization.

623643523100455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872228703666.

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 623643523100455 in words is "six hundred twenty-three trillion, six hundred forty-three billion, five hundred twenty-three million, one hundred thousand, four hundred fifty-five".