49697157887983 has 2 divisors, whose sum is σ = 49697157887984. Its totient is φ = 49697157887982.

The previous prime is 49697157887959. The next prime is 49697157888029. The reversal of 49697157887983 is 38978875179694.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49697157887983 is a prime.

It is a super-2 number, since 2×49697157887983² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49697157087983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24848578943991 + 24848578943992.

It is an arithmetic number, because the mean of its divisors is an integer number (24848578943992).

Almost surely, 2^{49697157887983} is an apocalyptic number.

49697157887983 is a deficient number, since it is larger than the sum of its proper divisors (1).

49697157887983 is an equidigital number, since it uses as much as digits as its factorization.

49697157887983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46088663040, while the sum is 91.

The spelling of 49697157887983 in words is "forty-nine trillion, six hundred ninety-seven billion, one hundred fifty-seven million, eight hundred eighty-seven thousand, nine hundred eighty-three".