1294427351957 has 8 divisors (see below), whose sum is σ = 1295411659776. Its totient is φ = 1293443170992.

The previous prime is 1294427351951. The next prime is 1294427351963. The reversal of 1294427351957 is 7591537244921.

It is an interprime number because it is at equal distance from previous prime (1294427351951) and next prime (1294427351963).

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 1294427351957 - 2²⁰ = 1294426303381 is a prime.

It is a super-2 number, since 2×1294427351957² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1294427351896 and 1294427351905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1294427351951) 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, 33083468 + ... + 33122570.

It is an arithmetic number, because the mean of its divisors is an integer number (161926457472).

Almost surely, 2^{1294427351957} is an apocalyptic number.

It is an amenable number.

1294427351957 is a deficient number, since it is larger than the sum of its proper divisors (984307819).

1294427351957 is a wasteful number, since it uses less digits than its factorization.

1294427351957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63427.

The product of its digits is 19051200, while the sum is 59.

The spelling of 1294427351957 in words is "one trillion, two hundred ninety-four billion, four hundred twenty-seven million, three hundred fifty-one thousand, nine hundred fifty-seven".