1622640042551 has 8 divisors (see below), whose sum is σ = 1770493971600. Its totient is φ = 1474842979840.

The previous prime is 1622640042461. The next prime is 1622640042613. The reversal of 1622640042551 is 1552400462261.

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 1622640042551 - 2¹⁰ = 1622640041527 is a prime.

It is a super-2 number, since 2×1622640042551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622640044551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14156906 + ... + 14271063.

It is an arithmetic number, because the mean of its divisors is an integer number (221311746450).

Almost surely, 2^{1622640042551} is an apocalyptic number.

1622640042551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1622640042551 is a deficient number, since it is larger than the sum of its proper divisors (147853929049).

1622640042551 is a wasteful number, since it uses less digits than its factorization.

1622640042551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28433169.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 1622640042551 in words is "one trillion, six hundred twenty-two billion, six hundred forty million, forty-two thousand, five hundred fifty-one".