354431403656461 has 4 divisors (see below), whose sum is σ = 357683067910300. Its totient is φ = 351179739402624.

The previous prime is 354431403656441. The next prime is 354431403656471. The reversal of 354431403656461 is 164656304134453.

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

It can be written as a sum of positive squares in 2 ways, for example, as 93595369780900 + 260836033875561 = 9674470^2 + 16150419^2 .

It is a cyclic number.

It is not a de Polignac number, because 354431403656461 - 2²³ = 354431395267853 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 (354431403656441) 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, 1625832126756 + ... + 1625832126973.

It is an arithmetic number, because the mean of its divisors is an integer number (89420766977575).

Almost surely, 2^{354431403656461} is an apocalyptic number.

It is an amenable number.

354431403656461 is a deficient number, since it is larger than the sum of its proper divisors (3251664253839).

354431403656461 is a wasteful number, since it uses less digits than its factorization.

354431403656461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251664253838.

The product of its (nonzero) digits is 37324800, while the sum is 55.

The spelling of 354431403656461 in words is "three hundred fifty-four trillion, four hundred thirty-one billion, four hundred three million, six hundred fifty-six thousand, four hundred sixty-one".